Adjusting device for circular knitting machine



May 8, 1962 3,033,012

ADJUSTING DEVICE FOR CIRCULAR KNITTING MACHINE M. LOSERT Filed Jan. 18, 1961 swww INVENTOR. if/Wo 5/00 ozone/'7 United States Patent Qfiice 3,%3,i2 Patented May 8, 1962 3,033,012 ADJUSTING DEVICE FOR CIRCULAR KNITTING MACHINE Miloslav Losert, Trebic, Czechoslovakia, assignor to Sdruzeni potlniku textilniho strojirenstvi, Liberec,

, Czechoslovakia Filed Jan. 18, 1961, Ser. No. 83,562 Claims priority, application Czechoslovakia Jan. 25, 1960 4 Claims. (Cl. 66-1) The present invention relates to a circular knitting machine and in particular to a circular knitting machine of the type equipped with a device adjusting its various actuating mechanisms and checking the correct timing of their operation.

' The use of such a device for the above mentioned purposes is unknown in the conventional circular knitting machines. This is the reason why in case of breakdowns or exchange of worn'parts during a general overhaul, the known machines are not adjusted or repaired according to a unified practice exactly worked out by the producer when designing the machine; in such a case the repair work depends on the skill of the engineer or fitter, who is in charge of the overhaul, but this course is open to objections, as every fitter adjusts the same machine in a diiierent way.

In order to overcome this disadvantage, the circular knitting machine is, according to the invention, equipped with a dial, which rotates in relation to the movement of the needle cylinder or of a crank mechanism serving for the reciprocal movement of the machine, and the dial is fixed to the crank mechanism gear in such a way, that one revolution of the dial corresponds to two revolutions of the needle cylinder.

It is an object of the present invention to quickly and exactly check the basic position of the machine by means of a dial and with the aid of instructions relating to the installation and adjustment of the machine. It is the main feature of the checking operation that any operative position of the individual segments provided on the control drum is verified in relation to the corresponding operative position of the individual eccentrics of the auxiliary knitting stations and in relation to the respective working position of the needle cylinder and its needle butts of different length not only during the circular motion but also during reciprocal movement of the needle cylinder.

Instructions for adjusting and servicing the machine, which are an accessory of the dial, contain not only the assembly drawings of all control drum segments including the data in which their leading portions operate, duration and end of the various consecutive actuating stages of the control drum but also the mutual adjustment of all eccentries, engagement and disengagement of the pattern drums for various knitting stations, as well as engagement and disengagement of the clutch, controlling the reciprocal movement of the machine.

Details of the present invention will appear from the ensuing description of an exemplary embodiment represented in the accompanying drawings, wherein FIG. 1 shows in a diagrammatic representation the dial fixed to a crank mechanism gear;

FIG. 2 is a partial view of the dial in its basic position, said dial being covered with a protecting plate and observation glass; and

FIG. 3 is a diagrammatic representation of the control drum mantle developed in a plane and showing an exemplary arrangement of the segments in relation to the dial.

Referring to FIG. 1, a dial 1, provided at its periphery with a graduation from to 360, is fixed by means of screws 3 and a centering pin 4 to a crank gear 2. The crank gear 2 and the dial 1 are set in rotation from a main shaft 20 which also rotates a needle cylinder 21 of the machine. A link 5 engaging with one of its ends a pin 6 provided in the crank gear 2 and with its other end a pin 7 provided in a toothed segment 8, imparts to the latter a swinging motion about a supporting pivot 9. During slow movements of the machine, i.e., when the heel and toe of a stocking are knitted, the toothed segment 8 transmits its swinging movement to the main shaft and needle cylinder. This swinging movement is transmitted over a gear 22 loosely and rotatably mounted on the main shaft 20, and over bevel gears 23, 24, the former of these bevel gears being rigidly mounted on the main shaft, and the latter being rigidly connected the needle cylinder 21.

One swinging motion of the toothed segment 8 about the supporting pivot 9 corresponds to one revolution of the needle cylinder. Two revolutions of the needle cylinder correspond always to one revolution of the crank gear 2 and its dial 1. The latter is covered with a protecting plate 10, carrying an observation glass 11 provided with a gauge line 12 (FIG. 2).

'In the basic position of the machine the graduation mark 0 on the scale of the dial 1 coincides with the gauge line 12 on the observation glass 11. The leading and end portions of the various segments 13, 14, 15 (FIG. 3) of a control drum 16, along whose mantle surface or the ends 17 of respective levers 18 carry out a sliding movement, are marked in the instructions regarding the adjustment of the machine with certain degree numbers, which must correspond to the same degree marks on the dial 1. The sliding movement may also be carried out on the surface of the various segments. If the beginning 0 of the segment 13, whose purpose is to actuate a not illustrated heel clutch, coincides for instance with a leading edge 19 of the lever 18, then the beginning 0 of the dial 1 must also coincide with the gauge line 12 on the observation glass 11 (FIG. 2). In case the beginning 250 of the segment 14, which serves to actuate a not illustrated needle distributor, coincides with the leading edge 19 of a not illustrated lever which is arranged adjacent the lever 18 then the degree number 250 on the dial 1 must also coincide with the gauge line 12 on the observation glass 11. Every individual feed I, II etc. of the control drum 16 corresponds to one revolution of the dial 1 through 360".

The inventive idea disclosed by way of example in the accompanying drawing and corresponding descriptive part of the specification is, of course, by no means limited to such an exemplary embodiment and can be modified as to its design to suit any particular purpose, without exceeding the scope of the present invention. Instead of the revolving dial it is for instance possible to arrange a corresponding pointer which rotates around a fixed dial in accordance with the number of revolutions of the needle cylinder or of the crank gear.

The employment of the disclosed device for adjusting the various actuating mechanisms on a circular knitting machine has the particular advantage, that no highly skilled operators are required who are thoroughly acquainted with the machine and its operation, but that after dismantling or general overhaul of the machine the latter can be reinstalled and adjusted by the user as quickly and accurately as originally by the producer.

I claim:

1. In a circular knitting machine comprising a needle cylinder and actuating mechanisms, a device for adjusting said actuating mechanisms of the machine and for checking the correct timing of operations carried out by said mechanisms, a dialin said device, said dial revolving in relation to the movement of the needle cylinder, and means for adjusting said dial in relation to the required positions of said actuating mechanisms.

2. In a circular knitting machine comprising a needle cylinder and actuating mechanisms, a device for adjusting said actuating mechanisms of the machine and for checking the correct timing of operations carried out by said mechanisms, a dial in said device, a crank gear serving for the reciprocal movement of the machine, the dial revolving in relation to the movement of said crank gear, and means for adjusting said dial in relation tothe required positions of said actuating mechanisms.

3. In a circular knitting machine comprising a needle cylinder and actuating mechanisms, a device for adjusting said actuating mechanisms of the machine and for checking the correct timing of operations carried out by said mechanisms, a dial in said device, graduations on said dial,.an observation glass placed above the graduation of the dial, a gauge line on said observation glass, a crank gear, said dial being rigidly connected to said crank gear, means imparting rotary movement to the crank gear and dial, a toothed segment operatively connected to said crank gear so as to impart swinging motion to the segment during rotation of the crank gear, means for imparting the movement of the toothed segment to the needle cylinder, a control drum, actuating segments comprising leading and end portions mounted on said control drum, and

levers adapted to engage said actuating segments on the control drum, the leading and end portions of the various 4 segments corresponding to predetermined graduation's on said dial.

4. In a circular knitting machine comprising a needle cylinder and actuating mechanisms, a device for adjusting said actuating mechanisms of the machine and for checking the correct timing of operations carried out by said mechanisms, a dial in said device, graduations on said dial, an observation glass placed above the graduation of the dial, a gauge line on said observation glass, a crank gear, said dial being rigidly connected to. said crank gear, means imparting rotary movement to the crank gear and dial, a toothed segment operatively connected to said crank gear so as to impart swinging motion to the segment during rotation of the crank gear, means for imparting the movement of the toothed segment to the needle cylinder, a control drum, actuating segments comprising leading and end portions mounted on said control drum, and levers adapted to engage said actuating segments on the control drum, the leading and end portions of the various segments corresponding to predetermined graduations on said dial, onev revolution of the dial corresponding to two revolutions of the needle cylinder.

No references cited. 

